Adding Travis CI script

because a build test reduce commits with build errors
Use system language as default language. Closes #780.
Updated Belarusian translation
Merge pull request #731 from john-peterson/build

Adding Travis CI script
Merge pull request #808 from meequz/master

Updated Belarusian translation
Merge pull request #807 from kraleksandr/master

Some corrections for RU translation
Make Travis CI shut up a bit.
Fix Travis CI to build against libtorrent 0.16.x instead.
Use system geoip for Travis CI.
Fix Travis CI again.
Convert misc class to a namespace instead.
Update translations.
Rework travis script
Merge pull request #812 from Gelmir/travis_next

Rework travis script